It seems like a very popular opinion that ggs are more relevant and popular than bgs. Bgs get dragged for being fandom oriented rather than having lots of casual listeners.
This topic being discussed often seems to hurt alot of newer kpop bg fans.
Frankly as someone who has been there and done that, I don't think it's sth bad. While ggs have a broader audience, the reaction of that audience could be widely different one day to the next. It's completely unreliable. For the longest time ggs didn't had longevity bc of it. They have better longevity now that they target their fans instead of the broader audience. For bgs, their audience even if smaller it is consistently supportive of their work. Their careers tend to be more stable and long lasting.
So I don't think bgs being fandom oriented is sth negative to be upset about.